Development of a PM motor with built-in inverter to reduce power consumption in Japan
The challenge to change Japan's future with a newly developed motor that reduces power consumption
Contributing to a decarbonized society with "motors with built-in inverters
Can we further reduce the amount of power consumption around the world to realize a decarbonized society in which carbon dioxide emissions are virtually zero? In order to take this approach from the aspect of pumps, our flagship business, the Building Service & Industrial Company is currently working on the development of a PM motor with built-in inverter and promoting its widespread use in the market.
Our general-use pumps are used for water supply and drainage systems in apartment buildings, factories, and commercial facilities, and our products account for approximately 30% of domestic market share. The motor used to drive the pump is equipped with a new built-in inverter that can adjust the speed and optimize pump performance on site, enabling a reduction of approximately 30-50% in annual power consumption.
Inverter adjusts rotation speed to save energy
Generally, pump performance is selected with a margin of approximately 10% to 20%. Pumps are generally driven by induction motors and run at a constant-speed based on the power frequency (50/60Hz). Because valves and other components adjust the operating performance, at present, excess performance is wasted by valves, and pumps are operating in an excessive state. By adjusting the rotation speed with the inverter, the pump can be aligned with the required performance, making it easy for anyone to save energy. Until now, there have been only a few cases where inverters were employed in pumps with small output at additional cost. For that reason, we can expect a drastic reduction in power consumption throughout the country by replacing the pumps we have provided with motors with PM motors with built-in inverters.
Can be installed without a separate space
In the past, installing inverters required additional construction work and space. On the other hand, our motor with a built-in inverter uses a permanent magnet synchronous motor to achieve high efficiency and the same external dimensions as existing motors, making it possible to install an inverter without additional space. It also features a self-cooling function that can simultaneously cool the inverter and the motor to ensure effective cooling. Our strength in fluid analysis enables detailed analysis of the flow of cold air to achieve more effective cooling. By encouraging the widespread use of this motor with a built-in inverter in the market, we intend to actively promote CO2 reduction in Japan.
Contributing to Reducing Electricity Consumption in Japan
EBARA’s annual production of general-purpose pumps is more than 1.3 million units worldwide. The energy-saving effect of each unit may be small, but if scaling to an entire factory, community, country, or the entire world, its effect will become profound. In the future, we plan to expand our product range further so that more customers can use our products comfortably and further accelerate our activities to achieve carbon neutrality as a game changer in the industry and as a big move to reduce power consumption in Japan.
